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Senior System Administrator Jobs (NOW HIRING)

City of Ketchikan

Senior System Administrator

Ketchikan, AK · On-site

$91K - $123K/yr

SENIOR SYSTEM ADMINISTRATOR for the City of Ketchikan Information Technology Department. Regular, full-time; Monday - Friday 8:00am - 5:00pm; $7,438.80 - $10,476.63 DOQ plus benefits . Performs a ...

Stellar IT Group

Sr. System Administrator

Houston, TX · On-site

$82K - $111K/yr

Overview: Sr. System Administrator Houston, TX 6-12+ Months Contract Required Qualifications: * 7+ years of experience as a System Administrator, Infrastructure Administrator, Network Administrator ...

Maximus

Senior System Administrator

VA · On-site +1

$86K - $116K/yr

General information Job Posting Title Senior System Administrator Date Monday, June 8, 2026 City Remote Country United States Working time Full-time Description & Requirements Maximus is a trusted ...

Cape Fox SS

Senior System Administrator

Chantilly, VA

$120K - $130K/yr

The Senior Systems Administrator ensures the stability, performance, and security of mission-critical systems while driving infrastructure improvements, leading technical projects, and supporting ...

ClearEdge

Senior System Administrator

Linthicum, MD

$84K - $115K/yr

Learn more at www.clearedgeit.com/careers/ Your Mission ClearEdge is hiring a Senior System Administrator to support the administration, sustainment, and security of Linux-based systems across ...

ClearEdge

Senior System Administrator

Linthicum, MD · On-site

$84K - $115K/yr

Learn more at www.clearedgeit.com/careers/ Your Mission ClearEdge is hiring a Senior System Administrator to support the administration, sustainment, and security of Linux-based systems across ...

ClearEdge

Senior System Administrator

Linthicum, MD · On-site

$84K - $115K/yr

Learn more at www.clearedgeit.com/careers/ Your Mission ClearEdge is hiring a Senior System Administrator to support the administration, sustainment, and security of Linux-based systems across ...

AV

Senior System Administrator

Annapolis Junction, MD · On-site

$87K - $119K/yr

The Senior System Administrator III is responsible for designing, implementing, securing, and maintaining the organization's core IT infrastructure, providing Tier 3 support, and mentoring junior ...

Saviance

Senior System Administrator

$88K - $119K/yr

Saviance is seeking a Senior System Administrator to lead L2/L3 support for business-critical applications and cloud environments. This role involves ensuring system stability, security, and ...

Staffed4U

Senior System Administrator

Columbia, MD

$83K - $113K/yr

System Administrator - Level III Location: Columbia, MD Employment Type: Full-time Experience Level: Senior (9+ years) Security Clearance: Active TS/SCI with polygraph required Position Overview ...

Vibrint

Senior System Administrator

Hanover, MD · On-site

$175K - $191K/yr

Join Vibrint, where your career is a priority, and your future is our shared goal._____We are seeking a Senior System Administrator for a funded role with quantifiable Linux system administration ...

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Senior System Administrator information

See salary details

$49K

$102.2K

$143.5K

How much do senior system administrator jobs pay per year?

As of Aug 23, 2026, the average yearly pay for senior system administrator in the United States is $102,229.00, according to ZipRecruiter salary data. Most workers in this role earn between $86,000.00 and $116,500.00 per year, depending on experience, location, and employer.

What does a senior system administrator do?

A Senior System Administrator is responsible for managing, maintaining, and securing an organization's IT infrastructure, including servers, networks, and related systems. They oversee the installation and configuration of hardware and software, troubleshoot complex technical issues, and ensure the reliability and performance of IT services. Senior System Administrators also implement security policies, perform regular system updates, and may supervise junior IT staff. Their expertise is essential for minimizing system downtime and protecting data integrity.

What are the key skills and qualifications needed to thrive as a senior system administrator, and why are they important?

To thrive as a Senior System Administrator, you need in-depth knowledge of operating systems, networking, security protocols, and significant experience managing IT infrastructure, usually backed by a degree in computer science or related certifications (such as CompTIA, Microsoft, or Cisco). Expertise with tools like VMware, Active Directory, PowerShell, and cloud platforms (AWS, Azure) is typically required. Strong problem-solving skills, attention to detail, and effective communication are crucial soft skills for this role. These abilities ensure reliable system performance, minimize downtime, and support the technology needs of an organization.

What are some common challenges a senior system administrator may encounter when managing hybrid cloud environments?

Senior System Administrators often face challenges balancing on-premises infrastructure with cloud-based resources, which can include ensuring consistent security policies, managing data synchronization, and monitoring system performance across multiple platforms. They must also stay updated on evolving technologies and compliance requirements, as well as collaborate closely with development, security, and networking teams. Addressing these complexities requires strong problem-solving skills, robust documentation practices, and a proactive approach to both troubleshooting and automation.

What is the difference between Senior System Administrator vs Network Administrator?

AspectSenior System AdministratorNetwork Administrator
CertificationsCompTIA Server+, Microsoft Certified: Windows Server, Cisco CCNACompTIA Network+, Cisco CCNA, Cisco CCNP
Work EnvironmentData centers, enterprise IT environments, server managementNetwork infrastructure, routing, switching, network security
ResponsibilitiesServer deployment, maintenance, troubleshooting, system upgradesNetwork setup, monitoring, troubleshooting, security management

While both roles require networking and system knowledge, Senior System Administrators focus on server and system management, whereas Network Administrators specialize in network infrastructure. Both roles are essential in enterprise IT, often collaborating to ensure seamless technology operations.

More about Senior System Administrator jobs

What cities are hiring for Senior System Administrator jobs?

Cities with the most Senior System Administrator job openings:

What are the most commonly searched types of System Administrator jobs?

The most popular types of System Administrator jobs are:

Who are the top companies hiring for Senior System Administrator jobs?

The top employers for Senior System Administrator jobs are:

What states have the most Senior System Administrator jobs?

States with the most job openings for Senior System Administrator jobs include:

Senior System Administrator jobs near you
Infographic showing various Senior System Administrator job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 12% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $102,229 per year, or $49.1 per hour.

Senior System Administrator

Summit Federal Services, LLC

Fort Eisenhower, GA • On-site

$78K - $106K/yr

Full-time

Re-posted 2 days ago

Job description

Summit Federal  Services, LLC (SFS) with headquarters in Oakland, Maryland, is a fast growing woman owned Small Business and HUBZone company with an outstanding record of performance providing more effective and efficient acquisition, business process, training, IT, administrative and security services to multiple federal agencies.
SFS is looking for a Senior System Administrator to provide support to CBL Battle Lab  Facility located at Fort Gordon GA.   All work will be performed onsite.  This contract will support the CBL mission to provide experimentation support to the C- CDID with dynamic network experimentation integrated with CO, DODIN-A, EW and IA through the Cyber Battle Lab’s Experimentation Branch (EB), Environments Support Branch (ESB), and the Army Persistent Experimentation eNvironment (APEN) Cyber Enterprise Service Center (CESC). The CBL Experimentation Support contract will provide support in the form of experiments, assessments, analyses and network support that will validate proposed new technical solutions to resolve known Doctrine, Organization, Training, Material, Leadership & Education, Personnel, Facilities Policy (DOTMLPF-P) capability gaps within the CO, EW, Network, and IA force modernization lines of effort
Senior System Administrator RHN-E shall:
• This position is designated as Information Assurance Workforce (IAWF) Information Assurance Technical Level II (IAT II). Baseline certification: upon hire must already possess (and be maintaining) current Security+CE CompTIA commercial certification (or higher, such as CISSP, etc.).
• Computing environment (CE) certification: upon hire must already possess (and be maintaining) current certification for Microsoft Certified Solutions Associate (MCSA) Server 2012.
• Within six months of hire must obtain either: VMWare certification VCPS-DCV; or Udemy training certification VMware ESX and VSphere Admin Tutorial; or ITU training certification VMware vSphere VCP5.5.
• A minimum of five (5) years’ experience or equivalent administrating networks and systems, worked directly in the career field during five (5) of the preceding eight (8) years.
• Must possess advanced IT administrator skills in remote administration, remote desktop, Group Policy Object (GPO) management, system backup and recovery, and monitor servers for performance evaluation and optimization.
• Must possess advanced IT Administrator skills in Collaboration Services, e.g., Adobe Connect Server, Chat Services, SharePoint Portal, Electronic Email (Exchange) Server.
• Must possess advance skills in datacenter management, Cloud Services, virtualization, storage area networks (SANs), data/system backups, and asset management.
• Must possess expert remote troubleshooting and customer service skills
• Obtain and Maintain a Top Secret Security clearance with SCI eligibility.
SFS is an equal opportunity employer regardless of race, color, religion, creed, sex, marital status, national origin, disability, age, veteran status, on-the-job injury, sexual orientation, political affiliation or belief. Employment decisions are made without consideration of these or any other factors that employers are prohibited by law from considering. Any discriminatory action can be a cause for disciplinary action. SFS also prohibits discrimination against individuals with disabilities and will reasonably accommodate applicants with a disability, upon request, and will also ensure reasonable accommodation for employees with a disability.
 

Summit Federal Services, LLC is an equal opportunity employer regardless of race, color, religion, creed, sex, marital status, national origin, disability, age, veteran status, on-the-job injury, sexual orientation, political affiliation or belief. Employment decisions are made without consideration of these or any other factors that employers are prohibited by law from considering. Any discriminatory action can be a cause for disciplinary action. Summit Federal Services, LLC also prohibits discrimination against individuals with disabilities and will reasonably accommodate applicants with a disability, upon request, and will also ensure reasonable accommodation for employees with a disability.

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